Individual Calculations April 2009
 Mendez, Oscar  Total change: -6.50  Rating chartPersonal card
 Costa Rican National Championship Phase 1.1 San Jose CRC 2009-01-31
RcRownchangeKK*chgGame
 2047 1856 0.50 3 -0.26 25 -6.50 
  Murillo Ortiz, Gustavo 1988 CRC0.001-0.3225-8.00 
  Campos Cerdas, Jorge 2056 CRC0.5010.26256.50 
  Toro Soto, Anthony 2097 CRC0.001-0.2025-5.00 

Rc - average rating of rated opponents, Ro - rating of a player in a tournament, Rp - rating performance of an unrated player, W - points won in a tournament against rated opponents, N - total number of games against rated opponents, Change - change used for calculation according to formula, K - development coefficient, Kchg - rating change of a player calculated as (K * change)
 

 

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